CRS250 is a pure salt product that can help you create ideal saltwater for your aquarium. Whether you need to start a new tank, adjust the salinity, or deal with an emergency, CRS250 can provide 250 liters of quality saltwater in minutes. 

For emergencies CRS is a product that allows you to create your own saltwater with pure salts and no heavy metals. It has six major parameters that you can adjust flexibly: 

• Salinity
• Alkalinity
• Calcium
• Magnesium
• Sulphur
• Potassium

It also contains Strontium, Boron, iodine, and manganese. 

You can use CRS for: 

• Starting a new reef system
• Resetting a poorly performing reef system
• In case of emergencies or poisoning
• Lowering heavy metals due to overdose or leaching
• Restoring ionic balance 

CRS comes with separately packed macro elements (NaCl, KH, Ca, Mg, MgSO4) and a CRS solution enriched with potassium, strontium, boron, iodine, and manganese. You can also buy the CRS solution separately if needed. CRS salt can even work with tap water by subtracting the calcium and alkalinity in it. This makes it quick and easy to use tap water which is already on the right temperature in case of emergencies.